Grate



\ Feb. 26, 1929.

H. F. PORTER GRATE Filed Feb. 15, 1928 ATTORNEY Patented Feb.Y 26,l1929.

UNITED STATES PATENT OFFICE.

HERBERT E. PORTER, oF NEW Yoitx, N. i.'

GRATE.

Application ined February 15, 192s. semi No. 254,534.

An assemblage of this kind has many ad- Y.

vantages, some of which may be enumerated as follows:

The bar itself is strong and durable and in tilting action exert-s aleverage on the elements supported thereby which is greater than anaverage bar,.and, furthermore, there is less liabilityof breakage thanthere would be if the elements were supported centrally by a single bar.

The webs may bel narrower than a single bar so that ample space isprovided for the ashes to fall through and not lodge on the bar, and,furthermore, the webs, particularly the center web, is deected ortapered so that no ashes can rest thereon.

Vith these and other objects in View, the invention consists in certainnovel features of construction and combinations and arrangements ofparts, which Will be more fully hereinafter described and pointed out inthe claims.

In the accompanying drawings- Figure l is a view showing the bar inplan, also showing a fuel-supporting bar or element in plan, and anotherbar or clement in section;

Figure 2 is an end view ofFigure 1;

Figure 3 is a view in .transverse section on the line 3 3 of Figure l;

Figure 4 is a view in transverse section on the line 4-4 of Figure 1; l

Figure 5 is a fragmentary view iii section, similar to Figure 3,illustrating how one of the fuel-supporting bars oi' elements may be fretained on the grate bar when the assemblage of elements is completedon the bar.

My improved grate bar is indicated generally by the reference characterA, and coniprises a central longitudinal web l integrally connected bylateral ribs 2 with Websr 3, 3. The webs 3, 3 are parallel tothe centralweb 1 and all'of said webs are integral with end plates 4l, said endplates having truiinioiis 5 thereon for pivotally mounting the grate barand allowing it the required support,` and on one of said plates adepending crank arm 6 'is provided for the attachment of means to rockthe bar.

While I have illustrated my improved bai' as having three longitudinalwebs it is of course to be understood that I do not wishl to be limitedto the specific'number but believe an arrangement of three is apreferable one. Y

The bar A is adapted to support a series of fuelsupporting bars orelements 7 Which are positioned transversely of the grate bar and aresupported on all three we s of the grate bar. These elements 7 have atopposite sides spaced teeth, andthe-spaces betweenthe teeth are ofapproximately the same size as the teeth; and the upper portions of saidbars'are slightly spaced apartso as to give a maximum of air draft andyet properly support the fuel.

My improved grate is especially adapted for supporting fine fuel andhence it is iniportant that the' fuel be prevented from passing throughthe grate yet it is desirable that a maximum air space be left for thedraft.

The elements 7 are provided with depending tongues 8 at their ends,having enlai emeiits 9 thereon which fit under outwar ly projectingflanges 10 on the outside Webs 3 of bar 8 so as to hold the elements 7against displacement relative to the bar. y

The elements 9, as shown most clearly in Figure l, are of such lengththat when they abut one against the other they properly space theelements 7, and the flanges 10 on the bar A have recesses 11 therein ofa width sutlicient to accommodate the enlargements 9 of one grateelement 7, so that the elements may be .inserted on the bar at thispoint and then moved longitudinally out of the bar until the bar has itsquota of fuel-supporting elements.

The last fuel-supporting element may be equipped with a bendable tongueor linger 12, as shown in Figure 5, so as to be bent under a web 3 tohold this element on the grate bar.

I would call particular attention to the cross sectional shape of theWebs l and 3, as shown clearly in Figure 3 of the drawings.

It will be noted that the central web 1 has its y preferably'made with aslightly Wider upper surface but they too are deflected at their sideportions so as to shed the ash. p

It will thus be noted that with a har of this type there is no Widesurface on which the ash may. accumulate such as is true of grate" Y7,so that when' the grate har is rocked a direct lifting action is hadunder the f`uel-sup porting elements 7 adjacent their ends.

Various changes and alterations might he Amade inthe general form of theparts de scribed Without departing from the inven-V tion and hence I donot limit myself to the precisey details set forth hut consider myselfat liberty to make such changes and alterations as fairly fall Withinthe spirit and scope d of the appended claims.

I claim: i Y. v1. A gratebar, comprising three parallel Webs spacedapart, end plates integrally connecting saidrWebs, ribs integrallyconnecting said Webs intermediate their ends, the outer Webs havingflanges thereon With recesses inpsaid flanges, fuel-supporting elementson said'wehs, tongues on the elements, and enlargements on the tonguesengaging under the flanges of the outside Webs, and having entrance tosaid position through said recesses. Y

2. A gratel har, comprising three parallel Webs spaced apart, end platesintegrally connecting'said Webs, ribs integrally connecting said Websintermediate their ends, the outer Webs having flanges thereon withrecesses in said flanges,V fuel-supporting elements on said Webs,tongues on the elements, and enlargements onthe tongues engaging underthe flanges ofl the outside Wehsand having entrance to said positionthrough said recesses, said enlargments of a length whereby When theyengage each other the'elements will he spaced apart, l f

Signed at New York, in the county of New York and State of New York,this* 11th day of February A. D. 1928.'

HERBERT F. PORTER.

